Bruce I gotcha. Here is some info that I got from both Manley direct and Lito. At this point I'm not bothering to even call MMR again.
From Manley: 4.6L
Stroke Options: Stock 3.543, 3.750 stroker or 3.800 stroker
Comp Heights: 1.220, 1.200, 1.170 respectively.
Info from Lito
Rods should be 5.933
Crank is a coyote crank from what Lito and my builder had told me.
Both me, Lito and Manley feel its a -18cc piston at this point.
Here is my invoice description lol
"MMR 4.75 900SE ROTATING ASSEMBLY, 3V +20, ALLOY AND CLOSE TO 9.8**"
I've tried plugging all those combos into various calculators and the only way it goes below 8.5 compression is if the piston to deck is off from what I see.